<div class="panel panel-primary">
  <div class="panel-heading">父控件标题</div>
  <form class="form-horizontal">
    <div class="form-group">
      <label class="col-xs-2 control-label">用户名1：</label>
      <div class="col-xs-10">
        <input [(ngModel)]="username" name="userName1"/>
      </div>
    </div>
    <div class="form-group">
      <label class="col-xs-2 control-label">用户名2：</label>
      <div class="col-xs-10">
        <input [(ngModel)]="userObj.username" name="userName2"/>
      </div>
    </div>
  </form>
  <div class="panel-body">
    <test-child111 [username]="username" [userObj]="userObj"></test-child111>
  </div>
</div>
